diff --git a/test/CodeGen/union.c b/test/CodeGen/union.c
index 4884690..b40a405 100644
--- a/test/CodeGen/union.c
+++ b/test/CodeGen/union.c
@@ -1,4 +1,4 @@
-// RUN: clang-cc %s -emit-llvm -o -
+// RUN: %clang_cc1 %s -emit-llvm -o -
 
 union u_tag {
   int a;